2x^2-15x-3=5

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Solution for 2x^2-15x-3=5 equation:


Simplifying
2x2 + -15x + -3 = 5

Reorder the terms:
-3 + -15x + 2x2 = 5

Solving
-3 + -15x + 2x2 = 5

Solving for variable 'x'.

Reorder the terms:
-3 + -5 + -15x + 2x2 = 5 + -5

Combine like terms: -3 + -5 = -8
-8 + -15x + 2x2 = 5 + -5

Combine like terms: 5 + -5 = 0
-8 + -15x + 2x2 = 0

Factor a trinomial.
(-1 + -2x)(8 + -1x) = 0

Subproblem 1

Set the factor '(-1 + -2x)' equal to zero and attempt to solve: Simplifying -1 + -2x = 0 Solving -1 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -2x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -2x = 0 + 1 -2x = 0 + 1 Combine like terms: 0 + 1 = 1 -2x = 1 Divide each side by '-2'. x = -0.5 Simplifying x = -0.5

Subproblem 2

Set the factor '(8 + -1x)' equal to zero and attempt to solve: Simplifying 8 + -1x = 0 Solving 8 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1x = 0 + -8 -1x = 0 + -8 Combine like terms: 0 + -8 = -8 -1x = -8 Divide each side by '-1'. x = 8 Simplifying x = 8

Solution

x = {-0.5, 8}

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